tree b8ffdee0dae6d2e577436533e59bf00eed021d63
parent ecd6e2af5060ba3f7d5c978be6d617d1242f231c
author Alistair Strachan <alistair.strachan@imgtec.com> 1462489472 -0700
committer Alistair Strachan <alistair.strachan@imgtec.com> 1462489498 -0700

updater, minzip: Remove unnecessary O_SYNC flags.

Remove O_SYNC from mzExtractRecursive() and PackageExtractFileFn().
These functions deal with extracting whole files from the update
package onto a filesystem. If run on ext4 on a rotating disk, for
example, the O_SYNC flag will cause serious performance problems
and the extraction proecss can take over 30 minutes, with no
obvious benefits.

This API function already calls fsync(fd) after each file is
extracted to ensure data and metadata is written to the underlying
block device, so the O_SYNC calls should be superfluous and safely
removable.

This change does not affect the OTA patch paths or any modification
of the bootloader partition or writes to other 'emmc' partitions.

Signed-off-by: Alistair Strachan <alistair.strachan@imgtec.com>
Change-Id: I9cbb98a98e6278bf5c0d7efaae340773d1fbfcd2